[XFS] Reduce endian flipping in alloc_btree, same as was done for ialloc_btree.
[XFS] Reduce endian flipping in alloc_btree, same as was done for
ialloc_btree.

SGI-PV: 955302
SGI-Modid: xfs-linux-melb:xfs-kern:26910a

Signed-off-by: Eric Sandeen <d55521028c14e0f378be5444e4ea388161c0d7e7@sandeen.net>
Signed-off-by: Nathan Scott <e2e3f1f24cbc439f8c1ba9b08f9954237d64be64@sgi.com>
Signed-off-by: Tim Shimmin <d1c056a983786a38ca76a05cda240c7b86d77136@sgi.com>

KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs